The CSS3 Playground is a web application for experimenting with some new css3 capabilities. Primarily those than conform to the progressive enhancement philosophy, which means that the styles can be used on all sites without severely changing/limiting the experience on browsers that does not support them (=Internet Explorer 8.0 and older). But there are also styles that may need better replacements on Internet Explorer such as rotation, and I hope I will have the time to add more in the future.

The Yahoo! Query Language is an expressive SQL-like language that lets you query, filter, and join data across Web services. With YQL, apps run faster with fewer lines of code and a smaller network footprint.